To hide or protect your apps I would suggest you use App lock.Heres how.

: Download App Lock from the Google Play Store. When you first start the app, you will be prompted to set up an unlock pattern after which you need to provide an email ID for security and backup purposes.

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: You will then be taken to the main screen of the app. Under the Privacy tab, scroll down to find a list of applications that you can lock. Tap on the app name that you want to lock. The first time you lock an app, you will be prompted to grant App Lock Usage data access.

: Press the back button to go back to the main menu of App Lock. Now, you can lock any app that you want by simply tapping on the lock icon near its name. At this point, if you try and open any locked .

application, App Lock will prompt you to enter the unlock pattern that you first created. To make the app use the fingerprint scanner for verification purposes, head over to the Protect tab and enable the Fingerprint lock option.

Now, whenever you open a locked application, you can either unlock it by simply verifying your fingerprint or by entering the unlock pattern. The fingerprints that you have registered for unlocking your device are the ones that will also work with App Lock.

S9 plus will be a better choice because it has best specification of them all. But if you can compromise with screen size you can go with Galaxy S9. Note 8 will be a better choice when you need a notepad. Seriously it seems useless when it comes to daily use. The position of the fingerprint sensor in the S9 and S9 plus is better than that of the Note 8. It's seems really hard when it comes to one hand operation because the note 8 has edgy corners but S9 and S9 plus has curvy corners which provides a pretty good grip and makes one hand operation much easier. Further will be your choice.

If u don't bother abt that tint issue in pixel 2.. definitely it's the best out there ! If u are loyal to Samsung then go for s9. Nokia 8 those who don't like Samsung phones they can choose !! All are good at their own point of view !! Camera is your priority then pixel or s9 !!